TY - GEN
T1 - Compression fatigue failure of CFRP laminates with impact damage
AU - Uda, Nobuhide
AU - Ono, Kousei
PY - 2007/12/1
Y1 - 2007/12/1
N2 - The objective of this study is to investigate failure mechanisms of compression fatigue behavior of impact-damaged CFRP laminates. Two kinds of composite materials, UT500/Epoxy and AS4/PEEK, were used to examine the dependence of failure behavior on the material properties such as interlaminar toughness. Impact-induced delaminations in the UT500/Epoxy specimen were relatively larger than those in the AS4/PEEK specimen. The S-N curves for the UT500/Epoxy specimens with impact damage showed a similar tendency to those without impact. And the impactinduced delamination in the UT500/Epoxy specimen grew widthwise to the free edge on the rear side of the specimen during the fatigue test. On the other hand, the AS4/PEEK specimens without impact showed the steeper slope of the S-N curve in comparison with those with impact. The delaminations in the impacted AS4/PEEK specimen never reached the free edge before the fatigue fracture.
AB - The objective of this study is to investigate failure mechanisms of compression fatigue behavior of impact-damaged CFRP laminates. Two kinds of composite materials, UT500/Epoxy and AS4/PEEK, were used to examine the dependence of failure behavior on the material properties such as interlaminar toughness. Impact-induced delaminations in the UT500/Epoxy specimen were relatively larger than those in the AS4/PEEK specimen. The S-N curves for the UT500/Epoxy specimens with impact damage showed a similar tendency to those without impact. And the impactinduced delamination in the UT500/Epoxy specimen grew widthwise to the free edge on the rear side of the specimen during the fatigue test. On the other hand, the AS4/PEEK specimens without impact showed the steeper slope of the S-N curve in comparison with those with impact. The delaminations in the impacted AS4/PEEK specimen never reached the free edge before the fatigue fracture.
UR - http://www.scopus.com/inward/record.url?scp=79960063332&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79960063332&partnerID=8YFLogxK
M3 - Conference contribution
SN - 9784931136052
T3 - ICCM International Conferences on Composite Materials
BT - Proceedings of the 16th International Conference on Composite Materials, ICCM-16 - "A Giant Step Towards Environmental Awareness
T2 - 16th International Conference on Composite Materials, ICCM-16 - "A Giant Step Towards Environmental Awareness: From Green Composites to Aerospace"
Y2 - 8 July 2007 through 13 July 2007
ER -